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Repair tips  

Electronic appliance repair tips database - TV (LCD,TFT,Plasma,Digital), Monitor, VCR, DVD recorder and player, Digital camera, Audio equipment, Microwave ovens, Phone systems, Computer repair

MakeModelProblemSolutionDate
Found: 901
HitachiNP81CQ Mk2Flyback lines at topC715 4µ7 250v14-09-2004
HitachiNP82Standby - stuck on standby - no functions.IC901 ( STR441 ) on main chassis.14-09-2004
HitachiNP82CQdeadPri HT - no 11v HT - to overide overvolts trip s/c C912 & sub lop tr with bulb. - HT now 130v (correct on dummy load). Replace STR6020 and now ok14-09-2004
HitachiNP82CQdeadSTR6020 s/c; 2Afuse o/c; Lop tr 2SD898B Q781 s/c14-09-2004
HitachiNP82CQDead.Drys on D950.14-09-2004
HitachiNP82CQFIELD FOLDOVER & FLYBACK LINESR614 HIGH 150k14-09-2004
HitachiNP82CQFrame - rolling when hot.C609 ( 0.22u f ) if not check components off pin 1 of TDA14-09-2004
HitachiNP82CQInt loss of sound.Looks like dry joints check lead out wires on TX.14-09-2004
HitachiNP82CQNo chan storepin3 MDA2062 memory chip only 4.7v (20v), break in pcb track under on/off sw14-09-2004
HitachiNP82CQNO COLOUR PIN 5 IC501 LOW ( NORMALLY 3.8v FOR MAXC507 2u2 SC14-09-2004
HitachiNP82CQNo picture.IC901 ( STR6020 ) , 2SD898B , Q681 ( 2SC1213A ) , R772.14-09-2004
HitachiNP82CQNo sound or raster.R772 o/c , replace STA441C.14-09-2004
HitachiNP82CQRagged verticals & loud whistle.IC701 ( LA7801 )14-09-2004
HitachiNP82CQTuning - drift.D1503-8 , D1511-2 leaky.14-09-2004
HitachiNP82CQTuning - no tuning above a certain frequency.D1508-1514 leaky.14-09-2004
HitachiNP82CQTuning - snowy picture & poor sound.C054 ( 22uf ) in AGC cct leaky.14-09-2004
HitachiNP82CQWhistle - loud whistle & ragged verticals.IC701 ( LA7801 )14-09-2004
HitachiNP82CQWONT TUNECHECK ZD901 , IC901 ( LM317T )14-09-2004
HitachiNP82CQWONT TUNE , LOW FIXED VOLTAGE AT TUNER TUNING PINR1533 ( 39k )14-09-2004
HitachiNP82CQ Mk2int revert to st/byIC901 STR602014-09-2004
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